(1) Move internal flags out of the options field, to make room.
(2) \r and \n must be explicit to trigger the special CRLF handline exception.
(3) (?J) at the start now sets JCHANGED as well as DUPNAMES.

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/*************************************************

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* PCRE testing program *

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*************************************************/

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/* This program was hacked up as a tester for PCRE. I really should have

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written it more tidily in the first place. Will I ever learn? It has grown and

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been extended and consequently is now rather, er, *very* untidy in places.